add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/infiniband/core/nldev.c
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@@ -502,7 +502,7 @@
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 	/* In create_qp() port is not set yet */
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 	if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port))
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-		return -EINVAL;
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+		return -EMSGSIZE;
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 	ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num);
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 	if (ret)
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@@ -541,7 +541,7 @@
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 	struct rdma_cm_id *cm_id = &id_priv->id;
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 	if (port && port != cm_id->port_num)
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-		return 0;
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+		return -EAGAIN;
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 	if (cm_id->port_num &&
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 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num))
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@@ -754,6 +754,8 @@
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 	int ret = 0;
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 	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
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+	if (!table_attr)
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+		return -EMSGSIZE;
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 	rt = &counter->device->res[RDMA_RESTRACK_QP];
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 	xa_lock(&rt->xa);
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@@ -2146,6 +2148,7 @@
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 	},
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 	[RDMA_NLDEV_CMD_SYS_SET] = {
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 		.doit = nldev_set_sys_set_doit,
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+		.flags = RDMA_NL_ADMIN_PERM,
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 	},
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 	[RDMA_NLDEV_CMD_STAT_SET] = {
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 		.doit = nldev_stat_set_doit,